Stockholders' Equity (Deficit) (Tables)
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9 Months Ended |
Sep. 30, 2017 |
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| Equity [Abstract] |
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| Schedule of Stock-based Compensation Expense |
The stock-based compensation expense recognized for the periods
presented below was as follows:
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Year Ended
December 31, |
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Nine Months Ended
September 30, |
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2016 |
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2015 |
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2017 |
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2016 |
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(Unaudited)
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Stock-based compensation expense by type of award:
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Restricted stock
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$ |
151 |
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$ |
54 |
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$ |
629 |
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$ |
78 |
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Common stock awards
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1,442 |
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— |
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250 |
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1,442 |
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Employee stock purchase plan
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— |
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— |
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24 |
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— |
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Stock options
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137 |
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73 |
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12,708 |
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68 |
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Total
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$ |
1,730 |
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$ |
127 |
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$ |
13,611 |
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$ |
1,588 |
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Stock-based compensation expense by operating expense grouping:
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Sales and marketing
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$ |
71 |
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$ |
80 |
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$ |
276 |
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$ |
51 |
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Research and development
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31 |
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20 |
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261 |
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17 |
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General and administrative
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1,628 |
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27 |
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13,074 |
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1,520 |
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Total
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$ |
1,730 |
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$ |
127 |
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$ |
13,611 |
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$ |
1,588 |
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| Schedule of Restricted Stock Activity |
Restricted stock activity for the periods presented was as
follows:
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Shares |
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Weighted
Average Grant
Date Fair Value |
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Unvested at December 31, 2014
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133,569 |
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$ |
1.50 |
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Granted
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108,345 |
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$ |
1.42 |
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Forfeited
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(120,696 |
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$ |
1.43 |
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Vested
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(41,568 |
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$ |
1.50 |
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Unvested at December 31, 2015
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79,650 |
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$ |
1.50 |
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Granted
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213,940 |
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$ |
4.75 |
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Forfeited
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(14,143 |
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$ |
3.88 |
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Vested
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(70,561 |
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$ |
1.50 |
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Unvested at December 31, 2016
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208,886 |
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$ |
4.80 |
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Granted (unaudited)
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52,433 |
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$ |
14.79 |
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Forfeited (unaudited)
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(22,018 |
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$ |
8.43 |
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Vested (unaudited)
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(78,399 |
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$ |
7.82 |
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Unvested at September 30, 2017 (unaudited)
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160,902 |
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$ |
6.08 |
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| Schedule of Fair Value Assumptions |
The Black-Scholes option-pricing model requires various
assumptions, which are noted in the following table:
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Year Ended
December 31,
2016 |
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Year Ended
December 31,
2015 |
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Nine Months
Ended
September 30,
2017 (Unaudited) |
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Expected terms (in years)
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5.58 - 6.08 |
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5.28 - 6.07 |
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5.83 - 6.08 |
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Expected volatility
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55.00% - 60.00% |
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55.00% |
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65% |
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Risk-free interest rate
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1.30% - 1.72% |
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1.34% - 2.07% |
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1.89% - 2.20% |
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Expected dividend yield
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— |
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— |
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— |
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| Schedule of Stock Option Activity |
The following is a summary of the Company’s stock option
activity:
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Weighted-Average |
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Options |
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Exercise
Price |
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Remaining
Contractual
Term |
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Aggregate
Intrinsic
Value |
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Outstanding at January 1, 2015
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588,007 |
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$ |
1.50 |
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9.68 years |
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$ |
— |
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Options granted
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236,799 |
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$ |
1.50 |
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Options forfeited / cancelled
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(190,608 |
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$ |
1.50 |
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Outstanding at December 31, 2015
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634,198 |
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$ |
1.50 |
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8.84 years |
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$ |
— |
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Options granted
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317,931 |
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$ |
3.82 |
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Options exercised
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(51,507 |
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$ |
1.50 |
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Options forfeited / cancelled
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(220,188 |
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$ |
1.50 |
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Outstanding at December 31, 2016
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680,434 |
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$ |
2.27 |
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8.49 years |
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$ |
3,031 |
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Options Granted (unaudited)
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4,000,508 |
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$ |
14.66 |
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Options Exercised (unaudited)
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(3,281 |
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$ |
1.70 |
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Options Forfeited / Cancelled (unaudited)
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(115,719 |
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$ |
8.56 |
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Outstanding at September 30, 2017 (unaudited)
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4,561,942 |
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$ |
12.99 |
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8.98 years |
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$ |
155,197 |
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Exercisable at September 30, 2017 (unaudited)
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1,661,125 |
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